Collapsible fireproof shutter



J. W. WHITSON. COLLAPSIBLE FIREPROOF SHUTTER.

APPLICATION FILED OCT-7.1914- 0 z a u m I)"; 7 I n w m 11/ k u 2 6 R 9 1 i l, I 0t 11 T i 0 H N 1 i I I, 2 3 f W 1 1 W 3 9 k H F E l 0 I F. k I 4 H l I n w s .k m 2 l 6 y t a 1 7 WITNESSES:

BY M 1114/2 04,

A TTORNE Y J. W. WHITSON. JOLLAPSIBtE FIREPROOF SHUTTER.

APPLICATION FILED OCT-7,1914- Patented Feb.-10, 19201 2 SHEETS-SHEEI 2.

i is a specification.

' and windows, the shutter casing taking'the .To' all whom it may concern:

mt earn F Ion.

aonnw. wrnrson', or saw rnanorsoo, CALIFORNIA.

- ooLLArsInLn r rnzrrnoor SHUTTER.

Be it'known that 1, JOHN W. WHrrsoN, a citizen of the UnitedStates, residing at San Francisco, in-the county of San-Franclsco and State ofCahforma, have invented 7 new and useful Improvements 1n Collapsible Fireproof Shutters; of which the following The object of the present-invention is to i provide a strong, collap'sible,'fire-proof shutter betweenthewalls ofwhich will be an i airspace for greatly retarding. the passage of heat therethrough. A further object is 'to providesuch a'shutter which, when @01- lapsed, will occupy but little space, especially ina horizontal direction, and whichcan therefore be installed with ordinary doors place oi parts of the door or'window frames, without. any materlal change in their size andshape.

In the accompanying drawing, Figure 1 is a frontview of the shutter, partly extended; Fig. 2 is a sectional'view of the same; Fig. 3 is atop plan sectional view of the same; Fig. 4: is a horizontal section on the line H of Fig. 2; Fig; 5 is an enlargedvertic'al section of the shutter; Fig. 6 is a view similar, to Fig. t, showing the shutters applied to an ordinary window frame.

On referring to the drawing, it will be seen that my improved shutter consists of sections or slats, all of which except the lowermost are precisely alike in form and size. Eachof theupper sections comprises two plates 1,1. Eachiplate has along, mediate portion a sloping slightly inwardly upward and extended at the top and bet ises F gv upward, asshown at e.

tom into. short vertical parts 6 and c, the part 0 bending at the bottom, as shown at cl, and then extending vertically v7 At the top of the vertical portion b the plate is bent. as shown at f, to rest upon the upper edge of the extension e of'the next higher; plate on the;

same side, thenv extends vertically down:

: ward',,as shown atg, tofalmost thelevel of i the bend d,.then bent back on itself, as

LlfiQreinriPe f.a dth@eeeee es 9 shown at h, extending vertically upward, as

shown, at 2', to a heightfgr'eater than the Specification of Letters Patent.

eeters- 1 9 Applicat'ion filed. October 7, 1914. Serial No. 865,516.

izontally inward at ,rightangles, as shown.

at y or 7', the horizontally extending. portion jof the plate 1. being above that; j; of

the plate 1.

The lowermost section instead of having interlocking lowerportions, hastlwo sides 2,

2' whichareriveted at the.bottom, as shown at 3, to a horizontal bar, 6,1. and the upper portions of which sides are in bother-wrespects similar to the plates 1' andl, of. the

upper sections. The horizontally. extending portions j and j have recesses 4 ,4 in

their'sides near their ends and in said recesses are received verticalguide rods ,5.

-These guide rods and. recessed portions secure said shutters against excessive'bending due to any pressure on the shutter, forfithe: guide rods act as locks to preventlongltudlsections out of the verticalside casings23 rial displacement of the ends of the shutter in which ends of the shutter sections move I vertically;

Said barb extends at its ends beyond said lowermost section and to the ends-of most section is interposed between, andsep rates two 'presser plates 14, 1t which, except in the upper portion, are similar togthe plates 1,1,

70 which engage the bent portions of the uppermost section and support the same.

Said plates 14,14 are secured to, fingers 15, around whichpass loops'l6v'at theends of" cords 17 supporting :weights 18.; Said fingers are supported by rods 19,,the ends of .ea'chrod being secured, as. shown, a .;t 20,, "to the front and back surfaceslof thecasing'13, and the: rods .sloping downward from said ends to the center. :Byreason, h atre. 9 i 1 hi iih Plates-fiend having hooked lower) portions to assume a central position in the casing and are only separated when the shutter ter section first descends between said edges 11, and,'as it descends, the two plates 1, l

of thenext lower section approach each other,iso that the hooked upper portions of the lowermost section. engage the hooked :lower portions of the next'lowermost section, and said next lowermost section it self descends between the edges'l1,andso on for all the sections. V

Fig. 6 illustrates the application of the shutter to an ordinary window, 21, 22 indicating the window sashes, and the shutters belng'shown on both sldes 01": the window,

the casing 23 taking the place of either the V blind or loose stops.

The advantages of this construction are that by forming each shutter section oftwo piecesII obtain double the strength of ordinary" rolling slats, and furthermore, I. also obtain an air space between the inner and outer walls of the shutter, which air space renders it practically impossible for a confiagration on one side of the shutter to raise the other side or" the shutter to the degree of heat necessary to ignite combustible material ad acent to said other side. Consequently my improved shutter gives far better protection against heat than those here- 'tofore provided. V

WVhile the construction in which each section comprises two plates, which, when they arrive at the upper head, are pushed to oppositesides by the succeedingsections, is the preferred form of my invention, it is not absolutel essential thereto, as an inferior form of the'invention maybe used in which each section consists of a single plate only, this plate, when it arrives at the upper head, being pushed to oneside by the next succeeding plate of the shutter.

"I claim:' I H 1. A collapsible shutter consisting of shutter sections each having upper and lower partswhich-.detachably engage s1milar lower and upper parts respectively of tween said parts two upwardly extending 'walls, and each shutter section having means spacing sald walls from each other,

when the shutter is extended.

2. A collapsible shutter consisting f the adjacent sections, andalso having be shutter sections each composed of two plates, and means for spacing said plates from each other, each plate having upper and lower parts which. detachably engage similar lower and upper parts respectively of the adjacent plates on the same side of the shutter.

8. A collapsible shutter consisting of shutter sections each composed of two plates, and means for spacing said 'plates from each other, each plate having upper'and lower parts which engage similar lower and upper parts respectively of the adjacent plates on the same side of the-shutter, said engagement being vertically detachable.

.4. A collapsible shutter consisting of shutter sections each having; upper and lower parts which detachably engagesimilar lower and upper parts, respectively of the adjacent sections, and also having between said p'arts two 1 upwardly" extending spaced walls, and means disconnected from one of said walls, spacing said walls from each other, when the shutter is extended.

5. A collapsible shutter consisting of shutter sections each havingparts detachably engaging parts of adjacent shutter sections,-and having-also between said partsv walls, means spacing said walls from each I other when the shutter. is extended, and vertical guidesbetween said walls for said shutter sections. 6. A collapsible shutter consistingof' shutter sections each having parts detaclr ably engaging parts of adjacent shutter sections, and having also between said parts walls, means spacing said walls from each other when the shutter is extended, and havwing horizontally extending parts formed with recesses and vertical bars in'said recesses and guidingsaid shutter sections.

'7. A collapsible shutter consisting of sections each comprising plates, the plates oi each section being spaced from each other but converging upwardly, said sections having parts detachably engaging similar parts of other sections to; connect the same together; guides for the plates 0t the sections when separated from each other by .theinterpositio'n of the'next lower section, and 1 5 meansforpressing said plates of-cach section together when so separated..

'8. A collapsible shutter cons sting of a series of sections having marginal parts detachably engaging marginal parts of other sections, means for moving simultaneously and at uniform speed allot said sections in their extended position,*mea'ns for ar-' resting each section in succession, the part of said section so arrested which engages the marginal part of-thenext succeeding section being automatically detached therefrom by said arrest. j

9. A collapsible shutter consistingl'of a series of sections having marginal parts detachably engaging marginal parts of adjacent sections of a series, a container to which said sections can be moved and in which they are received, and means for moving said sections tosaid container, the engagements between the marginal parts permitting any section more remote from the container to separate from one nearer thereto, when the latter is arrested in its 10 movement to the container, each section being constructed in said movement to move laterally the next nearer sectlon 1nto the contamcr.

In testimony whereof I have hereunto set my hand in the presence of two subscribing 15 witnesses.

- JOHN W. WHITSON;

Witnesses:

FRANCIS M. WRIGHT; D. B. Riel-limos, 

